Expanding the application of methanol fuel cells in the energy economy is only feasible when a low-cost or highly CO-tolerant electrocatalyst replaces Pt catalysts to enhance the electrocatalytic properties of Pt. In this study, a PtAu thin film was produced at the liquid-liquid interface through the simple reduction of [Pt(cod)Cl2] and [Au(PPh3)Cl] complexes. The resulting thin film was directly transferred onto a glassy carbon electrode (without the application of Nafion (TM)) and used as an electrocatalyst in the methanol oxidation reaction. Experimental and theoretical results both confirmed that PtAu exhibits lower CO poisoning compared to PtPd or Pt films. The high jf/jb ratio (where jf is the maximum current of the anodic peak in the forward route and jb is the maximum of peak current in the backward route), and theoretically calculated adsorption energies for PtAu thin film showed higher CO tolerance compared to Pt or PtPd thin film electrocatalysts.
PtAu Thin Film as Anode Electrocatalyst in Methanol Fuel Cell / Hoseini, S. Jafar; Bahrami, Mehrangiz; Askarisarvestani, Golandam; Nabavizadeh, S. Masoud; Shahsavari, Hamid R.; De Giglio, Elvira; Mastrorilli, Piero. - In: JOURNAL OF CLUSTER SCIENCE. - ISSN 1040-7278. - 35:6(2024), pp. 1731-1742. [10.1007/s10876-024-02605-0]
PtAu Thin Film as Anode Electrocatalyst in Methanol Fuel Cell
Shahsavari, Hamid R.;Mastrorilli, Piero
2024-01-01
Abstract
Expanding the application of methanol fuel cells in the energy economy is only feasible when a low-cost or highly CO-tolerant electrocatalyst replaces Pt catalysts to enhance the electrocatalytic properties of Pt. In this study, a PtAu thin film was produced at the liquid-liquid interface through the simple reduction of [Pt(cod)Cl2] and [Au(PPh3)Cl] complexes. The resulting thin film was directly transferred onto a glassy carbon electrode (without the application of Nafion (TM)) and used as an electrocatalyst in the methanol oxidation reaction. Experimental and theoretical results both confirmed that PtAu exhibits lower CO poisoning compared to PtPd or Pt films. The high jf/jb ratio (where jf is the maximum current of the anodic peak in the forward route and jb is the maximum of peak current in the backward route), and theoretically calculated adsorption energies for PtAu thin film showed higher CO tolerance compared to Pt or PtPd thin film electrocatalysts.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
